New to the site and have read several posts regarding excessive battery drain. Getting a service check on Wednesday and will post root causes. Only had the car for 1 month, so a bit frustrating to not be able to start the car. Moreover, some of the posts are concerning, as this appears to be a persist BMW problem - not to mention that some of the proposed causes seem a bit lame - such as keep the CA key more than 10-50 feet away from the car (kinda hard to do without leaving it at a neighbor's up the street), drains if you don't drive it for a few days - seriously? and this is a response from the BMW dealership, need to drive the car 50 miles per day - again, seriously?. buy a trickle charger - sorry, i thought the 5 series was a $60k automobile, so i don't buy that excuse either. anyone have any luck with solving this problem, besides replacing the battery every few days......